Free Sales Tax & Price With Tax Calculator
Sales Tax Calculator
Calculate sales tax, tax amount, and the final price after tax. Enter a pre-tax purchase price and sales tax percentage to instantly estimate how much tax you pay and your total purchase price.
Enter your numbers
Enter the pre-tax price and sales tax rate to calculate the tax amount and final price.
Enter the product or service price before sales tax.
Enter the applicable combined sales tax rate.
Results
Enter the price and sales tax rate to see the results.
Example
A $100 purchase with an 8% sales tax rate results in $8 of sales tax and a total price of $108.
How to use this sales tax calculator
Enter the purchase price before tax and the applicable sales tax rate. The calculator estimates the sales tax amount and adds it to the pre-tax price to calculate the estimated total price after tax.
Pre-Tax Price
The purchase price before sales tax is added.
Sales Tax
The estimated tax calculated from the entered sales tax rate.
Total Price
The estimated purchase price after sales tax is added.
What is sales tax?
Sales tax is a tax that may be imposed on certain retail sales of goods and services. A seller generally collects applicable sales tax from the customer and remits it according to the rules of the relevant taxing jurisdiction.
In the United States, there is no single nationwide general sales tax rate. State and local rules can differ, and the combined rate for a transaction may include state, county, city, district, or other local taxes.
How to calculate sales tax
To calculate sales tax manually, convert the percentage tax rate to a decimal and multiply it by the pre-tax purchase price. Then add the tax amount to the original price.
Sales Tax Formula
Sales Tax = Pre-Tax Price × (Sales Tax Rate ÷ 100)
Total Price = Pre-Tax Price + Sales Tax
Sales tax calculation example
Suppose an item costs $100 before tax and the applicable sales tax rate is 8%.
Pre-Tax Price: $100
Sales Tax Rate: 8%
Sales Tax: $8
Total Price: $108
In this example, multiplying $100 by 0.08 gives $8 in sales tax. Adding $8 to the original $100 price produces a total purchase price of $108.
Common sales tax calculation examples
The examples below show how different tax rates affect a $100 pre-tax purchase.
5% Sales Tax
$100 × 5% = $5 tax, producing a total price of $105.
6% Sales Tax
$100 × 6% = $6 tax, producing a total price of $106.
7% Sales Tax
$100 × 7% = $7 tax, producing a total price of $107.
8% Sales Tax
$100 × 8% = $8 tax, producing a total price of $108.
8.25% Sales Tax
$100 × 8.25% = $8.25 tax, producing a total price of $108.25.
10% Sales Tax
$100 × 10% = $10 tax, producing a total price of $110.
How to calculate price with tax
If you want to calculate a price including sales tax in one step, multiply the pre-tax price by one plus the tax rate expressed as a decimal.
Price With Tax Formula
Price With Tax = Pre-Tax Price × (1 + Sales Tax Rate)
For example, with an 8% tax rate, multiply the pre-tax price by 1.08. A $250 purchase would therefore have an estimated total price of $270.
Why sales tax rates vary
Sales tax rates and rules vary because different states and local governments may impose their own taxes. Depending on the location, a combined sales tax rate can include several separate tax components.
Taxability can also depend on the type of product or service. Certain groceries, clothing, prescription products, digital goods, services, and other purchases may receive different treatment depending on the jurisdiction.
Enter the rate that applies to your transaction
This calculator does not automatically determine the correct local sales tax rate. Enter the combined rate that applies to the purchase or location you want to estimate.
U.S. sales tax calculator
This calculator can be used with a U.S. sales tax percentage when you already know the applicable combined rate. Because sales tax systems vary by state and locality, the calculator intentionally lets you enter the rate manually.
For an actual transaction, verify the applicable rate and taxability rules with the relevant state or local tax authority, retailer, or qualified tax professional when necessary.
Sales tax calculator vs. reverse sales tax calculator
A regular sales tax calculator starts with the price before tax and calculates the tax amount and total price after tax.
A reverse sales tax calculator works in the opposite direction. It starts with a tax-inclusive total and estimates how much of that total represents the original pre-tax price and how much represents sales tax.
Already know the total price after tax?
Use the Reverse Sales Tax Calculator to work backward from a tax-inclusive total.
Reverse Sales Tax Calculator →How discounts and sales tax work together
Discounts can change the amount used to calculate sales tax, but the exact treatment depends on the type of discount and the applicable tax rules.
Retailer discounts, manufacturer coupons, rebates, and other promotions may not always receive identical tax treatment. Therefore, this calculator should be used as a general estimate rather than a determination of tax liability.
Calculating a sale price first?
Use the Discount Calculator to estimate percentage savings, stacked discounts, and final sale price.
Discount Calculator →Related calculators
Reverse Sales Tax Calculator
Find the estimated pre-tax price and sales tax amount from a tax-inclusive total.
Reverse Sales Tax →Discount Calculator
Calculate sale price, savings, stacked discounts, and estimated final price with sales tax.
Calculate Discount →Profit Margin Calculator
Calculate profit, profit margin percentage, and business profitability from revenue and costs.
Calculate Profit Margin →Markup Calculator
Calculate markup percentage, selling price, profit, and margin.
Calculate Markup →Frequently Asked Questions
How do I calculate sales tax?
Multiply the pre-tax purchase price by the sales tax percentage expressed as a decimal. Then add the resulting tax amount to the original price.
How do I calculate the total price with sales tax?
Add the calculated sales tax to the pre-tax purchase price. You can also multiply the pre-tax price by one plus the sales tax rate expressed as a decimal.
How much is 8% sales tax on $100?
An 8% sales tax on $100 is $8, making the estimated total purchase price $108.
How much is 7% sales tax on $50?
A 7% sales tax on $50 is $3.50, making the estimated total purchase price $53.50.
Is sales tax included in the listed price?
It depends on the location and pricing practice. In many U.S. retail situations, sales tax is added at checkout rather than included in the displayed pre-tax price.
Are sales tax rates the same everywhere?
No. Rates and rules can vary by state, county, city, district, product, service, and other factors.
Does this calculator automatically find my local sales tax rate?
No. Enter the combined sales tax rate that applies to the transaction you want to estimate.
How do I remove sales tax from a total?
To work backward from a tax-inclusive total, divide the total by one plus the sales tax rate expressed as a decimal. The Reverse Sales Tax Calculator can perform this calculation for you.
Does a discount reduce sales tax?
It can, but tax treatment depends on the type of discount and the applicable jurisdiction. Retailer discounts, coupons, and rebates may be treated differently under local tax rules.
This sales tax calculator provides simplified estimates for general informational and educational purposes only. Actual sales tax rates, taxable items, exemptions, discount treatment, sourcing rules, and other requirements vary by jurisdiction. Verify applicable rules with the appropriate tax authority or a qualified professional when necessary.